Stopping for mine-ventilating crosscuts



J. F. JOY. STOPPING FOR MINE VENTILATING cRosscuTs. v APPLICATION FILED MAR. 24, 1920.

Patented Nov. 7, 1922..

S14/manioc E y dro .Se/@lo Patente Nov. 7, i922.

PATENT JOSEPH r. JOY, or PITTsnUneII, PENNSYLVANIA, nsSIGNoa To JOY MACHINE COMPANY, OF PITTSBURGH, PENNSYLVANIA, vA CORPORATION or DELA,-

wenn.

STOPPING- FOR MINE-VENTILATING CROSSCUTS.

Original application filed February 15, 1919, Serial N o. 277,177. Divided and this application filed March 24, 1920. Serial Ilm-368,454.

To all 'whom t may concern.'

Be it known that I, JOSEPH F. JOY, a citizen ofthe United States of America, residing at Pittsburgh, in the county of Allegheny andY State of HPennsylvania, have invented kcertain new Vand useful Improvements vin Stoppings' for Mine-Ventilating Crosscuts.

of which the following is af'specication.l

, 'Ihis invention relates to certain new and useful improvements in stoppings for minevemtllating cross cuts and has particular reference to an improved unitary Stopping y adapted for use in closing .Ventilating cross Outs or break throughs `of Vcoal mines.

The present application is a division of my copending application upon mining and apparatus therefor, Serial No. 277,177, filed February-15, 1919.

In places where `coal mining is carried on, there are laws designed tosafeguard miners, and, among the lmost important, are those governing ventilation of the mines. A certain amount of fresh air must, in accordance wit-h these laws, be delivered to eachman per minute, and some ofthe air must be delivered past the working .face ofeach mine room. In order to comply with the requirement of'these laws, air passages or cross cuts are formed through the walls Separating rooms and entries, and, asthe mining proceeds and new cross cuts are formed, it is necessary to close the previously made cross cuts in order to insure proper flow of the air` forced into the mine. The closures for Across cuts are usually termed ,"stoppings and are each in the form of a wall or barrier built in a cross cut to prevent the air, of the Ventilating current froinpassing therethrough.

:Prior to my invention, the building and maintenance of Stoppings have been eX- tremely costly items in the development of 'acoal mine or the-production of coal It is an Object of the present invention, therefore,'to provide an improved unitary stopping for cross cuts which may be bodily placed in or removed from a cross cut-instead of being built in or emoved in parts anddestroyed, thus reducing to .a `minimum the timel and labor necessary therefor and to consequently greatly V,reduce the costA of the same.

Avrrfurther object of the invention ist-o provide an improvedstopping for cross cuts characters designate corresponding parts throughout the several views,

Figure 1 is a diagrammatic plan view of a portion of a room-and-pillar mine formed with cross cuts made in accordance with the present invention,

Figure 2 is a central sectional view of a stopping positioned in a cross out and constructed in accordance with the present 'Invention,

Figure 3 is a perspective view of the stopping Shown in Fig. 2, and

Figure 4 is a lview similar to Fig. 2 of a modified form of stopping.

Referring' more in detail to the several views, 5 indicates themain entry of the mine into` which air is forced by any suitable means, not shown. As indicated by arrowsJ in Fig. 1, Some of the air flows in this main entry, and the rest is caused, by means of check cloths or the like, not shown, to pass into and through the rooms 6, the flow being from room to room through'the open cross cuts 7. The open cross cut-s 7 are those nearest the working faces 8 ofthe mine rooms, it being understood that before said open cross cuts were formed, the stopping 9 was notused in the closed cross cut 10.

The back entry or return aircourse 11 is driven parallel` with the main entry 5, and in the. development of the mine shown, a series Vof cross `\cuts 12 were successively formed-through the wall separating the entries 5 and 11 andV closed by a stopping 9 until the Open cross cut 13 was made to allow the air to pass directly from the inner end of entry 5 to the inner end of entry 11 and then out as shown by arrows to a suitable point of discharge.- y

The foregoing description is directed to Substantially what is now donein the developmentof mines, except that the cross cuts as now formed are of no particular size or uniform shape in cross section and the stoppings of the cross cuts are specially built in to suit the particular size and shape of each cross cut. Also, the stoppings,4 as new formed, are of such nature that they are practically totally destroyed when re moved for obtaining the pillar coal, While the cross cuts shown in thepresent draw-4 ing are circular and of a definite size so that a standard sized and unitary portable stopping, such as the one forming the subject matter of the present invention, may be gob dry Wall, and (9') slate or gob faced j with cement. lAll of these stoppngs are builtin to suit each crossy out and some constantly require repairs' While" others are the cause of much loss of time ivhe'noneces sarily demolished and renroved Y in the processv of securing or mining the pillar coal. By refsony of the fact that I forin the cross cuts' of iiniforinfor standard sizes and shape in cross section, I ain enabled toy practically make use of unitary, portable and reusable yor bodily removable stoppings, sheetl metal forms of whichv are shown in Figures 2 to 4L. The" machine for forming the circular standard sized and shaped cross cuts is shown, described and claimed in my above mentioned copending application. y

In Figures 2 and 3, the stopping isin the form of a metallicfdisk I4 havinga flanged annular band 1'5 riveted or other wise concentrically fastened to one face thereof. The band 15 is of fa slightly smaller diameter than the disk 14- so as to leave a projecting portion ofthe latteras at 16 to form a backing against which the oakum or equivalent packing materialb 1:7 is packed", which material is placed between the band 15 andthe surrounding Wall of the cross cut 10 so as to prevent any material leakage of air. A. handle 18 maybe provided to be grasped in the hand" Wlenvini"- tially positioning the stopping' inf or removing the same from1 the cross. cut, and'Y if it is desired'to anchorthe stopping, said screws 149 may be threaded through the band 15 for engagement with the Wall of the cross cut. It is to be understoo'd'that othe'rzanchoring meansthanthe screws 19m'ay bef `treed.

or the samemay be entirely dispensed'rvvith'g' In` Fig. 4L the stopping also includes a 65 disk 14 having an annular flanged band 15 riveted or otherwise concentrically fastened to one face thereof, but the band 15 in this linstance is at least equal indiameter to the disk 1li and is reversely positioned when in 70 the stopping touches the Wall of the cross cut similar-` to the mannerl in lvvhich put-ty `is placed adjacent the `edges of a glass ane when the latter is secured a sash. ,his stopping also I'n'ayv have a handle 18,

From the foregoing descriptionVit'iis 80 thought that the many advantagesas vvell as the construction and manner of use of the present invention will be readily appreciated and clearly understood by` those skilled in the art. .A

' Minor changes may be made in the forms, and coi'nbinationV andj arrangement of parts Without departing from the spiritand sc'ope of thev invention 'as claimed.

Vhat I claim asl new is zf y 4 1. A stopping for fitting entirely into mine Ventilating cross cuts 'comprising a. disk of substantially the same diameter as `the cross cut and having. an annular flange adjacent to and, spaced inn'arc'llyfrom outer edge thereof, the' being in' the form of a laterally projecting band; d

2f. stopping entirely fitting Hinto minel ventilating crpss cuts" comprising a ,p

disk of substariti'ally` the saine' diameter as 100 the cross cut and having an annular flange adjacent to and spaced inwardly from the outer edge thereof,y thefla'nge being inthe form of a laterallyprojecting band, and stopping carrier anchoring means ,forA said by said band. l y, Y y L i i .3. A stopping for entirely littin'ginto mine Ventilating cross' cuts comprisinga disk of substantially the saine diametery as' the cross cuts and having an annular flange 1h10 adjacentto and spaced inwardly froml the outer edge thereof, the flange being in the form' of' a laterally projecting band, and anchoring means carried by said stopping.

i'. a Sappiagiiikeaa deseaba@ in @1am 115 3 wherein the disk is" provided with; a' lian dle, wherein ,the fia'nge" is spacedA the outer edg'f'e` ofthe disk-'to receive packv` ing material tlierearound betv'vseeri thenuter Y face of the sam'and the innerfface. ofthe 1240 crosscut Wall so that an air-tight joint may behad/ N c y l 5. As an article ofrmanufacture, a rigid sheet metal unitary stopplngl [for removlatin'g' cross cuts of mines. p v y In testimony whereof IaffiX myslgnature.

Josera F. JOY.

ablyfitting entirely into and closing venti! 1125, 

